Current Crest Factor – (CCF)

Current Crest Factor is the ratio of the peak-to-rms value of light bulb current; (i.e. metal halide ballast CCF range from 1.5 to 1.8)

The Crest Factor is an easy and useful calculation that gives the person analysing a good idea of
how much impacting is occurring in a time waveform. This can be useful information that is
lost if one is only viewing a spectrum as the FFT cannot distinquish between impacting
and audible noise. In many cases, the Crest Factor is measured over time to see if the amount of impacting is increasing or decreasing.